The land is home to swimming ponies and a legendary 18th-century treasure.

Giant, friendly pelicans in Central London, the most unlikely of places.

Lie in a hammock where George Washington stood.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The highest point in Virginia can only be reached by passing through ponies and flowers.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Bizarre Cavern.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

An astounding collection of medical specimens, including bits of President Lincoln.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The history and future of cannabis.

A derelict bit of transportation infrastructure hidden in the woods.

London's old-school healing garden.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

The largest greenhouse in the world is home to over one million types of plants.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.